antithetic

As adjectives the difference between contrary and antithetic

is that contrary is opposite; in an opposite direction; in opposition; adverse while antithetic is diametrically opposed.

As an adverb contrary

is contrarily.

As a noun contrary

is the opposite.

As a verb contrary

is (obsolete) to oppose; to frustrate.

As a noun antithesis

is a proposition that is the diametric opposite of some other proposition.

As an adjective antithetic is

diametrically opposed.

As an adjective antithetic

is diametrically opposed.

As a noun antithet is

(archaic) an antithetic or contrasted statement.